Usability Testing is very important area in complete User Centered Design process. Presenting best books to learn about Usability Testing in detail.

1. Practical Guide to Usability Testing

Author: Joseph S. Dumas

The book begins by defining usability and explaining methods of usability engineering. Readers are taken through all the steps for planning and conducting a usability test, analyzing data, and using the results to improve both products and processes. Included are forms that can be used or modified to conduct a usability test, and layouts of existing labs that will help readers to build their own.

2. Handbook of Usability Testing: How to Plan, Design, and Conduct Effective Tests

Author: Jared Spool, Jeffrey Rubin, Dana Chisnell

Whether it?s software, a cell phone, or a refrigerator, your customer wants?no, expects?your product to be easy to use. This fully revised handbook provides clear, step–by–step guidelines to help you test your product for usability.

3. Eyetracking Web Usability

Authors: Jakob Nielsen and Kara Pernice

Eyetracking Web Usability is based on one of the largest studies of eyetracking usability in existence. Best-selling author Jakob Nielsen and coauthor Kara Pernice used rigorous usability methodology and eyetracking technology to analyze 1.5 million instances where users look at Web sites to understand how the human eyes interact with design.

4. Prioritizing Web Usability

Authors: Hoa Loranger and Jakob Nielsen

After more than a decade of Web usability research, we literally have thousands of guidelines for making better websites. But what are the most important ones that all designers need to know? That's what Prioritizing Web Usability is about.

5. Usability Inspection Methods

Authors: Jakob Nielsen

The first comprehensive, book-length work in the field of usability evaluation. Designed to get you quickly up and running with a full complement of UI strategies, tools, and techniques. This extremely practical guide offers you a unique opportunity to learn them from the women and men who invented the techniques.

6. Usability Engineering

Author: Jakob Nielsen

Detailing the methods of usability engineering, this book provides the tools needed to avoid usability surprises and improve product quality. Step-by-step information on which method to use at various stages during the development lifecycle are included, along with detailed information on how to run a usability test and the unique issues relating to international usability.

7. UX Design and Usability Mentor Book

Author: Emrah Yayici

The book explains best practice user experience design and usability testing tools and techniques

8. Remote Research

Authors: Nate Bolt and Tony Tulathimutte

Remote studies allow you to recruit subjects quickly, cheaply, and immediately, and give you the opportunity to observe users as they behave naturally in their own environment. In Remote Research, Nate Bolt and Tony Tulathimutte teach you how to design and conduct remote research studies, top to bottom, with little more than a phone and a laptop.